Radiant|Lab Grown|IGI

1.31ct G SI2 Radiant Lab Grown Diamond

VG • G/SI2 • IGI LG514255267

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG514255267

Diamond specifications and retailer prices

From $720 USD
As of October 30, 2026
Save $564 USD (44%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $3,343 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.31ct lab-grown radiant diamond

This 1.31ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG514255267 or 514255267. Listed at 4 retailers as of October 30, 2026, with a 78% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.31
Carat
G
Color
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.5°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG514255267
Dimensions6.96 × 5.29 × 3.94 mm
L/W Ratio1.32
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.96 mm5.29 mm1.31 ctG / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG514255267
Side View
Table 69.0%Crown 45.5°Girdle: STK-THKPavilion 33.5°Culet: NoneDepth 74.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: $3,343 USD|Low: $720 USD|High: $3,369 USD|Avg: $1,601 USD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 31, 2026
Retailer 3$720 USD
Retailer 2$1,264 USD
Retailer 5$1,267 USD
Retailer 4$1,284 USD
MOH London$3,343 USD

41 data points across 5 retailers

4 retailers$720 USD to $1,284 USD

B+
Cheapest Retailer
-
$720 USD
B
Retailer 2
-
$1,264 USD
£995 GBP
View
B
Retailer 3
-
$1,284 USD
View
Most Expensive
MOH London
LG514255267 · Oct 29
$3,343 USD
£2,632 GBP
View
Price under review
3 more retailers have this diamond
Prices start from $720 USDSave up to $564 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.31ct Radiant
$720 USD